CN107626934B

CN107626934B - Special numerical control lathe for machining engine valve sealing molded line and machining method thereof

Info

Publication number: CN107626934B
Application number: CN201710936384.1A
Authority: CN
Inventors: 丁晓伟; 陈戌连
Original assignee: Zhejiang Jintang Machine Tool Co ltd
Current assignee: Zhejiang Jintang Machine Tool Co ltd
Priority date: 2017-10-10
Filing date: 2017-10-10
Publication date: 2023-12-01
Anticipated expiration: 2037-10-10
Also published as: CN107626934A

Abstract

The invention discloses a special numerical control lathe for machining engine valve sealing molded lines and a machining method thereof. The protection shell assembly protects all parts, the lathe bed base assembly supports all parts, the saddle assembly achieves three-degree-of-freedom motion of the tool apron, the material distribution and discharging assembly achieves valve workpiece sorting and single discharging, the discharging assembly collects valve workpiece finished products in a blanking mode, the thimble assembly achieves clamping of auxiliary workpieces, the spindle head rotates the feeding assembly to achieve automatic falling of the workpieces into the detachable spindle head, the spindle assembly drives the workpieces to rotate, the clamping and pushing assembly clamps the workpieces and pushes out finished products, the pneumatic system assembly provides aerodynamic force, the lubricating system assembly lubricates all relatively moving parts, and the tool apron assembly achieves clamping of tools. All the assemblies are matched in a coordinated manner, so that full-automatic and efficient production of the engine valve is realized.

Description

Special numerical control lathe for machining engine valve sealing molded line and machining method thereof

Technical Field

The invention relates to a special numerical control lathe, in particular to a special numerical control lathe for machining an engine valve sealing molded line and a machining method thereof.

Background

The engine valve is a very important part in the engine, the shape accuracy of the engine has a great influence on the performance of the engine, and meanwhile, with the continuous development of a power machine, the requirement on the output of the engine valve is also continuously improved. In the existing valve forming process, a plurality of working procedures such as machine tool matching machining, chamfering, rough turning, semi-rough turning, finish turning, grinding and the like are generally needed, and each working procedure requires very complicated operations such as feeding, distributing, feeding, dismounting a fixture and the like, so that workers are boring in work and heavy in burden. Even on a numerical control lathe, the problems of frequent feeding and discharging, difficult chip removal, lathe vibration, unsatisfactory processing effect and the like can be solved due to the characteristics of small valve processing surface, small volume and large number.

Patent CN105798623a discloses an automatic processing all-in-one machine for engine valve, through setting up feeding clamping mechanism, upset clamping mechanism, abrasive wheel cutting mechanism, grinding mechanism, chamfering mechanism, realizes the integrated operation to working procedures such as valve earlier stage processing feeding, cutting off, polishing, chamfer, but each mechanism lacks control system, and each mechanism is only the simple stack of mechanical structure, has adopted traditional area to convey in the middle to carry out the work piece handing-over, does not realize high integration. The transmission system is single, mechanical faults are easy to occur, good lubrication of all mechanisms is not considered, and the valve shape characteristics are not fully utilized to design the conveying and feeding mechanism, so that the design requirement of a special machine is not met.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a special numerical control lathe for machining an engine valve sealing molded line and a machining method thereof.

The numerical control lathe special for engine valve sealing molded lines comprises a protective shell assembly, a lathe bed base assembly, a saddle assembly, a material dividing and discharging assembly, a blanking assembly, a main shaft assembly, a material clamping and pushing assembly, a pneumatic system assembly and a lubricating system assembly, wherein the lower part of the lathe bed base assembly is fixedly connected with the ground, the upper part of the lathe bed base assembly is movably supported and connected with the saddle assembly, the protective shell assembly takes the lathe bed base assembly as a support and is arranged outside a machine body, the upper part of the saddle assembly is detachably connected with a cutter holder assembly, the lower part of the cutter holder assembly corresponds to the main shaft assembly and the material clamping and pushing assembly, the main shaft assembly is detachably connected with the main shaft assembly through a connecting piece, the blanking assembly is arranged on the upper part of the main shaft assembly through the connecting piece, the material clamping and pushing assembly which is matched with the main shaft assembly is arranged in a straight line relative to the main shaft assembly, the pneumatic system assembly is arranged on the left side of the machine tool body, and the lubricating system assembly is arranged on the right side of the machine tool body.

The special numerical control lathe for machining the engine valve sealing molded line also comprises a cutter holder assembly, a thimble assembly and a main shaft head rotary feeding assembly;

The tool apron assembly comprises a far tool apron and a near tool apron, both the far tool apron and the near tool apron comprise square tool apron, T-shaped nuts, set screws and positioning keys,

the thimble assembly comprises a horizontal screw driven wheel, a horizontal screw synchronous belt, a horizontal screw driving wheel, a horizontal screw motor, a thimble sliding table guide rail, a thimble mechanism seat, a horizontal screw nut, a thimble screw motor, a thimble screw synchronous belt, a thimble screw driving wheel, a thimble screw, a horizontal screw, a thimble sliding table, a thimble screw nut, a thimble sleeve, a thimble head, a horizontal screw baffle, a thimble sleeve sliding table, a bearing seat (1), a bearing seat (2), a bearing seat (3), a bearing seat (4) and a thimble screw synchronous belt,

the main shaft head rotating and feeding assembly comprises an air cylinder sliding table fixing seat, a main shaft head clamp groove, a detachable main shaft head, an electromagnetic fixing seat, a rotating air cylinder and an air cylinder sliding table.

The lathe bed of the numerical control lathe special for machining the engine valve sealing line is designed to be inclined at 45 degrees, and a spindle motor is arranged at the lower part of the lathe bed and is isolated by a protective part.

The bottom of the saddle of the numerical control lathe special for processing the engine valve sealing molded line is provided with four sliding blocks, saddle nuts and guide rails and lead screws on the lathe bed base assembly, and the accurate displacement of the saddle on the Z axis is realized under the signal feedback control of the collision block and the travel switch, and likewise, the motor, the lead screws, the guide rails, the sliding blocks, the lead screw nut assembly and the like realize the accurate displacement on the X axis of the cutter seat sliding blocks connected with the motor, the lead screws, the guide rails, the sliding blocks, the lead screw nut assembly and the like under the control of the collision block and the travel switch.

The special numerical control lathe for machining the engine valve sealing line can adjust the positions of the adjusting plates on the plane x axis and the plane y axis through adjusting the lengths of the two adjusting rods, and can adjust the positions of the double side plates on the z axis in a rotating way, and a three-section path splicing mode of 30-degree inclined tracks, arc tracks and vertical tracks is set.

The notch of the special numerical control lathe for machining the sealing molded line of the engine valve is clamped with the shape of the valve, the falling valve component group is blocked in the initial state, after one feeding beat is finished, the cylinder body drives the piston rod to move, the ball head rod group drives the distributing disc to swing downwards by an angle, a single valve clamped at the notch passes through the notch, the arc surface of the distributing disc simultaneously continues to block the valve component group at the upper part, and after the action is finished, the cylinder piston drives the distributing disc to recover and one-time distributing is finished. Similar to the material distribution, the material discharge claw seals the double tracks through the material discharge claw disc at the beginning, a single air valve falling from the material distribution mechanism stays on the material discharge claw, when a material discharge signal is transmitted, the cylinder body drives the piston rod to pull the material discharge claw, the material discharge claw rotates around the pin shaft for an angle, the track space is released, and the air valve passes through.

The special numerical control lathe for machining the sealing line of the engine valve pushes the piston rod to move upwards through the cylinder body, the piston rod drives the bracket through the piston hinge assembly, and the bracket finally drives the whole support to rotate anticlockwise by 30 degrees around the rotating shaft through the connecting part, so that the material supporting plate is parallel to a wedge-shaped discharge hole at the lower end of the material discharging mechanism, material receiving is realized, and the V-shaped connecting block on the adjusting plate is matched with the shape of the valve. After the valve is processed, the valve is ejected to a receiving hopper, the conversion baffle is opened in a rotating mode, when the valve reaches the stop gate through the lower blanking channel, the proximity switch counts, the valve is matched with the follow-up double slide ways through the clearance adjustment space position reserved by the stop gate, and finally the valve reaches the stop block along the double slide ways to stop.

The special numerical control lathe for machining the engine valve sealing molded line clamps a valve workpiece through the cartridge head, and after machining is completed, the rotary cylinder is started to drive the piston, and the valve is ejected out of the cartridge head through linear pushing-out movement of the piston rod and the pull rod head.

The machining method of the numerical control lathe special for machining the engine valve sealing molded line comprises the following machining steps:

1) The valve workpiece falls down through three splicing paths of the 30-degree inclined track, the arc-shaped track and the vertical track. The material distributing disc is clamped in the double tracks to sort and discharge valve workpieces, the detection rods contact the valves to obtain parameters such as the number, time and speed of the passing valves, and the parameters are fed back to the central controller, so that the working beats of each mechanism are determined;

2) The electromagnetic fixing seat is electrified to work, the main shaft head clamp of the main shaft loosens the detachable main shaft head, the electromagnetic fixing seat clamps the detachable main shaft head, the rotary cylinder is ventilated to work, the detachable main shaft head is rotated by 90 degrees to reach the vertical position, the cylinder sliding table is ventilated to work, and the electromagnetic fixing seat and the rotary cylinder are pushed forward, so that the detachable main shaft head is just under the valve guide groove;

3) The material distributing cylinder body is electrified to drive the material distributing disc to rotate, the valve to be processed falls into the valve guide groove and enters the detachable main shaft head through the guide of the valve guide groove, the rotary cylinder rotates at the moment to reversely rotate the detachable main shaft head by 90 degrees to reach a horizontal position, the cylinder sliding table drives the rotary cylinder to retreat, the main shaft head clamp of the main shaft clamps the detachable main shaft head, the electromagnetic fixing seat stops working, and the detachable main shaft head is loosened;

4) The transverse screw rod motor works to drive the thimble sliding table to move so that the thimble head moves to a position coaxial with the main shaft, and at the moment, the thimble screw rod motor works to drive the thimble head to move forwards and jack the workpiece firmly;

5) During processing, the bullet chuck clamps the valve workpiece, and the main shaft precisely outputs the rotating speed and torque under the control of the encoder;

6) After the machining is finished, the rotary cylinder is started to drive the piston, and the valve is ejected out of the cartridge clip through the linear pushing-out motion of the pull rod head;

7) The air valve is ejected to the receiving hopper, the switching baffle is rotated to be opened, when the air valve reaches the material blocking door through the lower blanking channel, the air valve is counted by approaching the switch, the air valve adjusts the space position through a gap reserved by the material blocking door and is matched with the subsequent double slide ways to fall, and finally, the air valve reaches the sliding stop block along the double slide ways to stop;

8) The pneumatic system assembly controls parameters such as starting time, moment, speed and the like of pneumatic elements in each assembly;

9) The lubrication system assembly lubricates parts which move relatively;

10 The T-shaped nut and the positioning key realize the positioning and clamping of the square cutter seat on the cutter seat sliding block of the saddle assembly.

The protection system assembly has a protection effect on each assembly in the machine tool, shields external dust, electricity, magnetism and other interference, and the machine tool body and the machining platform are designed to incline at 45 degrees, so that the cutting force is consistent with the gravity direction of a workpiece, the cutting vibration is reduced, chip removal is facilitated through the gravity effect, a screw gap is eliminated, and the structure convenience is provided for automatic design; the saddle system assembly realizes the three-degree-of-freedom random machining of the plane of the tool apron through the precise displacement control in the X-axis and Z-axis directions, ensures the shape precision of the machined surface of the valve, and can also realize one-step forming processes such as turning instead of grinding and the like through adjusting the rotating speed of a main shaft; the reasonable arrangement of the positions of the spindle motor avoids the adverse effect of vibration and heat on workpiece processing during the operation of the motor; the three paths of the 30-degree inclined track, the arc track and the vertical track are spliced, so that the falling motion track and the motion speed of the valve are easy to control, and the material distributing mechanism can be used for distributing single valve workpieces according to the production beats; after the machining is finished, the main shaft rotary cylinder automatically ejects the finished product through the ejector rod; the blanking mechanism realizes quick blanking through rail matching and baffle control; the control system composed of a travel switch, a proximity switch, an encoder, a detector, a servo motor and the like is arranged in the numerical control machine system, the information acquisition is accurate, the feedback is rapid, the accurate control and the total use are achieved, the lubrication system assembly well lubricates the relatively moving parts, and the pneumatic system assembly ensures the rapid and quick movement of each pneumatic part. Therefore, the full-automatic production with high efficiency, high quality and high reliability of the valve is finally realized.

Drawings

FIG. 1 is an overall view of a numerical control lathe special for machining an engine valve sealing line;

FIG. 2 is an elevation view of a numerical control lathe special for machining engine valve seal lines according to the present invention;

FIG. 3 is a front view of the protective housing assembly of the present invention;

FIG. 4 is a top view of the protective housing assembly of the present invention;

FIG. 5 is a bottom view of the protective housing assembly of the present invention;

FIG. 6 is a schematic diagram of a spindle motor assembly of the present invention;

FIG. 7 is a schematic view of the components of the bed base assembly of the present invention;

FIG. 8 is a schematic view of the housings of the saddle of the present invention;

FIG. 9 is a schematic view of the saddle Z-axis travel mechanism of the present invention;

FIG. 10 is a schematic view of the saddle X-axis travel mechanism of the present invention;

FIG. 11 is a schematic view of a dispensing and discharging assembly of the present invention;

FIG. 12 is a side view of a dispensing and discharging assembly of the present invention;

FIG. 13 is a schematic view of an automated dispensing mechanism of the present invention;

FIG. 14 is a schematic view of an automatic discharging mechanism of the present invention;

FIG. 15 is a schematic view of a track clamping mechanism of the present invention;

FIG. 16 is a schematic illustration of a valve inspection mechanism according to the present invention;

FIG. 17 is a schematic view of an adjustment mechanism of the present invention;

FIG. 18 is a schematic view of a dispensing and discharging assembly (with valve guide) according to the present invention;

FIG. 19 is a schematic view of the various connecting mechanisms of the blanking assembly of the present invention;

FIG. 20 is a schematic view of a thimble assembly according to the present invention;

FIG. 21 is a schematic view of a rotary spindle head loading assembly according to the present invention;

FIG. 22 is a schematic view of a tool holder assembly of the present invention;

FIG. 23 is a schematic view of a tool holder mechanism according to the present invention;

FIG. 24 is a schematic view of a blanking mechanism of the present invention;

FIG. 25 is a schematic view of a spindle assembly of the present invention;

FIG. 26 is a schematic view of a spindle assembly of the present invention;

FIG. 27 is a schematic view of a clamping mechanism of the present invention;

FIG. 28 is a schematic view of a liftout mechanism of the present invention;

FIG. 29 is a schematic view of a piston mechanism of the present invention;

FIG. 30 is a schematic view of a binder and ejector assembly attachment mechanism according to the present invention;

FIG. 31 is a schematic view of a pneumatic system assembly of the present invention;

FIG. 32 is a schematic view of a pneumatic system tube of the present invention;

fig. 33 is a schematic view of the lubricant pump of the present invention.

Detailed Description

As shown in fig. 1 and 2, the special numerical control lathe for machining the sealing line of the engine valve comprises a protective shell assembly 1, a lathe bed base assembly 2, a saddle assembly 3, a material distributing and discharging assembly 4, a blanking assembly 5, a main shaft assembly, a material clamping and pushing assembly, a pneumatic system assembly, a lubricating system assembly, a tool apron assembly 10, a thimble assembly 30 and a main shaft head rotating and feeding assembly 40,

The lower part of the lathe bed base assembly 2 is fixedly connected with the ground, the upper part of the lathe bed base assembly is movably supported and connected with the saddle assembly 3, the protective shell assembly 1 is supported by the lathe bed base assembly 2 and is arranged outside a lathe body, the upper part of the saddle assembly 3 is detachably connected with the tool apron assembly 10, the lower part of the tool apron assembly 10 corresponds to the main shaft assembly and the clamping and pushing assembly which are detachably connected through a connecting piece, the upper part of the main shaft assembly is provided with the blanking assembly 5 which is matched with the blanking assembly 5 through the connecting piece, the clamping and pushing assembly 7 at the right lower part of the blanking assembly is linearly arranged relative to the main shaft assembly, the pneumatic system assembly is arranged at the left side of the lathe body, and the lubricating system assembly is arranged at the right side of the lathe body.

In the working process, the protective shell assembly 1 mainly plays a role in protecting each assembly, the lathe bed base assembly 2 mainly plays a role in supporting each assembly, the saddle assembly 3 is responsible for three-degree-of-freedom motion of the tool apron, the material distribution and discharging assembly 4 sorts and singly discharges workpieces, the discharging assembly 5 clamps the workpieces and discharges and collects finished products, the main shaft assembly realizes workpiece processing rotation motion, and the material clamping and pushing assembly realizes clamping of the workpieces and pushing of the finished products. The pneumatic system assembly provides aerodynamic force in the working process of the machine tool, the lubrication system assembly lubricates each relatively moving part, and the tool apron assembly 10 is responsible for clamping a tool.

As shown in fig. 3, 4 and 5, the protective housing assembly 1 includes a control panel 11, a front cross member 12, a left side cover 13, a right side cover 14, a right cover 15, a rear beam 16, an electrical box 17, a motor cover 18, a right side door 19, a right top cover 110, a sliding door 111, a sliding door upper rail 112, a rear cover 113, a rear right side plate 114, an upper cover 115, a sliding door guide 116, a brake resistor cover 117, a rear upper cover 118, a rear lower cover 119, an electrical box door 120, a system box 121, a motor bracket 122, a hydraulic station bracket 123, a rear cover bracket 124, a sign plate 125, a threading slot 126, a drag chain plate 127, a switch 128, an axial fan cover 129, a three-layer warning lamp 130 and an internal partition 131.

The front cross beam 12, the right side door 19, the electric appliance box door 120 and the bed base assembly 2 are fixedly connected, the control panel 11 is arranged on the right cover 15, the axial flow fan cover 129 and the switch 128 are embedded on the electric appliance box 17, the sliding door guide rail 116 is fixedly connected with the front cross beam 12, the sliding door 111 and the sliding door guide rail 116 are in sliding connection, the threading groove 126, the rear cover bracket 124, the hydraulic station bracket 123, the motor bracket 122 and the drag chain plate 127 are welded on the shell, and the rear right side plate 114, the rear lower cover plate 119, the rear upper cover plate 118 and the rear cover 113 are spliced into a rear protection whole.

During operation, the outer layer protection plate plays a role in protecting each assembly in the interior, and shields external dust, electricity, magnetism and other interference, each support in the interior plays a role in fixing and supporting parts, the threading groove 126 and the drag chain plate 127 guide and fix each circuit pipeline, the axial-flow fan cover 129 provides a heat dissipation and ventilation function, and the sliding door 111, the signboards 125 and the control panel 11 facilitate the operation of workers.

As shown in fig. 7, the bed base assembly 2 includes a spindle motor output mechanism 21, a Z-axis moving mechanism 22, and an adjustable bed mechanism 23, and as shown in fig. 6, the spindle motor output mechanism 21 includes a spindle motor 211, a spindle motor mounting plate 212, a pulley gland 213, a pulley 214, a conveyor belt 215, an adjustment bracket 216, and an adjustment lever 217, and as shown in fig. 7, the Z-axis moving mechanism 22 includes a screw drive motor 221, a coupling 222, a motor mount 223, an angular contact bearing and oil seal 224, a travel switch 225, a screw guide 226, a bearing housing 227, a platen and gland 228, and a screw 229, and the adjustable bed mechanism 23 includes a bed 231, a connection bracket 232, a shim 233, and an adjustment lever 234.

The spindle motor output mechanism 21 and the Z-axis moving mechanism 22 are detachably connected and fixed on the adjustable lathe bed mechanism 23, the adjustable lathe bed mechanism is fixed on the ground through four sizing blocks 233, an adjusting rod 234 is connected with the sizing blocks 233 and the lathe bed 231, a connecting support 232 is connected with the lathe bed 231 through bolts, a spindle motor 221 is detachably connected with the lathe bed 231 through a spindle motor mounting plate 212, a belt pulley 214 is connected with a motor shaft key, a belt pulley gland 213 is tightly pressed on the belt pulley 214 at the shaft end, one section of a conveyor belt 215 is matched with the motor belt pulley 214, the other end of the conveyor belt 215 is matched with the spindle assembly 6, a screw driving motor 221 is connected with the lathe bed through a motor seat 223 and a lathe bed bolt, a motor shaft is connected with a screw 229 through a coupler 222, two ends of the screw are supported by bearing seats 227, the bearing seats 227 are provided with angular contact bearings and oil seals 224, the screw guide 226 are fixed on the lathe bed 231 through bolts, and a travel switch 225 is arranged in the middle of the screw guide.

During operation, through adjusting the height of the adjusting rod 234, the angle of the machine tool can be adjusted, and the lathe bed 231 is designed to incline at 45 degrees, so that the cutting force is consistent with the gravity direction of the workpiece, the cutting vibration is reduced, the chip removal is facilitated through the gravity effect, the screw clearance is eliminated, and the structure convenience is provided for the automatic design. The spindle motor 211 is arranged at the lower part of the machine tool, so that adverse effects on workpiece processing caused by vibration and heat generated during motor working are avoided, and the travel switch 224 provides information reference for the movement of the saddle 3, so that precise control over the movement of the tool apron is facilitated. The screw driving motor 221 belongs to a precise servo control motor, and drives the saddle assembly 3 to realize precise displacement of the Z axis under the guidance of screw guide rails 226 at two sides.

As shown in fig. 8, the saddle assembly 2 includes a protective housing mechanism 31, a tool apron moving platform mechanism 32, and a Z-axis moving platform mechanism 33, as shown in fig. 12 and 9, the protective housing mechanism includes a scraper 311, a baffle 312, a connecting shaft 313, a shield 314, a sliding cover 315, a ram support 316, a ram 317, a cover plate 318, and a support 319, as shown in fig. 8 and 10, the tool apron moving platform mechanism 32 includes a tool apron slide 321, a slider 322, a bearing block assembly 323, a screw 324, a guide rail 325, a screw nut assembly 326, a motor 327, a seven-way lubrication system 328, and a coupling 329, and the Z-axis moving platform 33 includes a slider 331, a ram support 332, a ram 333, a saddle nut 334, a seven-way lubrication system 335, a saddle 336, and a saddle mating block 337, as shown in fig. 9.

The scraper 311 and the baffle 312 are connected with the lathe bed base assembly 2 through the connecting shaft 313 by bolts, the protective cover 314 and the sliding cover 315 are connected with the base in a sliding way, the tool apron sliding plate 321 is fixedly connected with the four sliding blocks 322 and the lead screw nut component 326, the sliding blocks 322 and the guide rail 325 are connected in a sliding way, the guide rail 325 is fixed on the matching block 337 by bolts, the motor 327 is connected with the lead screw 324 through the coupler 329, the lead screw nut component 326 is meshed with the lead screw 324, the four sliding blocks 331, the sliding saddle nut 334 and the guide rails 226 and the lead screw 229 on the lathe bed base assembly 2 are arranged at the bottom of the sliding saddle, the seven-way lubrication systems 328 and 335 are respectively arranged at positions close to the sliding block guide rails, the collision block 333 and the collision block bracket 332 are fixedly connected, and the collision block bracket 332 is arranged on the sliding saddle 336.

In operation, four sliding blocks 331, a sliding saddle nut 334 are arranged at the bottom of the sliding saddle and are matched with the guide rail 226 and the lead screw 229 on the bed base assembly 2, the sliding saddle is precisely displaced on the Z axis under the signal feedback control of the collision block 333 and the travel switch 224, likewise, the motor 327, the lead screw 324, the guide rail 325, the sliding block 322, the lead screw nut component 326 and the like are matched with the control of the collision block 316 and the travel switch to realize the X axis precise displacement of the tool apron sliding block 321 connected with the motor 327, the lead screw nut component 326 and the like, the two movements are combined, the planar three-degree-of-freedom precise displacement control of the tool fixed on the tool apron sliding block 321 is realized, and the seven-way lubrication systems 328 and 335 continuously lubricate the moving parts such as the guide rail sliding block and the like, so that the stability and reliability of the whole work are ensured.

As shown in fig. 11, the distributing and discharging assembly 4 comprises a conveying track mechanism 41, a distributing mechanism 42, a discharging mechanism 43, a position connecting and adjusting mechanism 44, a track adjusting mechanism 45 and a detecting mechanism 46, wherein, as shown in fig. 12, the conveying track mechanism 41 comprises a double-side plate 411, a double-side plate track 412, an upper inclined double track 413, an upper arc double track 414, an upper vertical double track 415, a track pressing shaft 416, an adjusting bar, a tightening handle and a gasket, as shown in fig. 13, the distributing mechanism 42 comprises a distributing disc 421, a bracket 422, a hinge point 423, a self-lubricating ball-rod bearing assembly 424, a distributing piston rod 425 and a distributing cylinder block 426, as shown in fig. 14, the discharging mechanism 43 comprises a discharging frame 431, a discharging claw pin shaft 432, a discharging claw 433, a discharging hinge point 434, a discharging piston rod 435, a cylinder block 436, a bracket hinge point 437 and a bracket 438, as shown in fig. 16 and 17, the position connecting and adjusting mechanism 44 includes an adjusting unit 441, a base 442, a support 443, an adjusting plate 444, a double slide bar 445, a bar base 446, and an adjusting screw 447, the adjusting unit 441 includes an adjusting bar 4411, an adjusting base 4412, and an adjusting block 4413, as shown in fig. 15, the rail adjusting mechanism 45 includes a lockable handle 451, a clamp nut 452, a plate shaft 453, a spring 454, a movable adjusting plate 455, a fixed adjusting plate 456, and a shaft sleeve 457, as shown in fig. 16 and 18, the detecting mechanism 6 includes a detecting bar 461, a measuring bar base 462, an adjusting nut 463, a sensing piece 464, a proximity switch 465, a detecting base 466, a total bracket 467, a valve to be processed 471, and a valve guide 472,

The material distributing and discharging assembly 4 is connected with the machine body through a base 442 and a machine body through bolts, two adjusting units 441 are fixedly connected with the base 442, an adjusting rod 4411 is connected with an adjusting seat 4412 in a telescopic mode, an adjusting block 4413 is fixedly connected with an adjusting plate 444, a double slide rod 445 is mounted on the adjusting plate 444, two rod seats 446 are connected on the double slide rod 445 in a sliding mode, an adjusting screw 447 is connected with a center thread pair of the rod seats 446, the double side plate 411 is fixedly connected with the double rod seats 446, a double side plate track 412 is closely arranged on the upper portion of the double side plate 411, an upper inclined double track 413, an upper arc-shaped double track 414 and an upper vertical double track 415 are arranged in parallel with the double side plate track 412, a track pressing shaft 416 is fixedly connected with the double side plate 411 through an adjusting strip, a fastening handle, a gasket, a fixed adjusting plate 455, a fixed adjusting plate 456 is fixedly connected with the side plate 457, a shaft sleeve is detachably connected with the adjusting plate, the plate shaft 453 is matched with the shaft sleeve, a spring 454 is sleeved on the shaft 453, and the fastening handle 451 is connected with the adjusting plate through a clamping nut 452. The support 422 is in bolted connection with the side plates and is connected with the distributing cylinder block 426 through the hinge point 423, the cylinder block 426 is in sliding connection with the piston rod 425, the piston rod 425 is connected with the distributing disc 421 through the self-lubricating ball rod bearing assembly 424, the distributing piston rod 435, the cylinder block 436, the support hinge point 437 and the support 438 are connected in a similar way to a distributing mechanism, the distributing piston rod 435 is in rotatable connection with the distributing claw 433 through the distributing hinge point 434, the distributing claw 433 is in rotatable connection with the distributing frame 431 through the distributing claw pin shaft 432, the main frame 467 is in bolted connection with the side plates, the detecting seat 466 is in bolted connection with the main frame 467, the proximity switch 465 is arranged on the detecting seat 466, the sensing piece 464, the detecting rod 461 are all connected with the detecting rod seat 462, the adjusting nut 463 is in adjustable connection with the detecting rod seat 462, and the valve guide groove 472 is in bolted connection with the plate 411.

During operation, the positions of the adjusting plates 444 on the plane x axis and the plane y axis can be adjusted by adjusting the lengths of the two adjusting rods 4411, the adjusting screws 447 are rotationally adjusted, the positions of the two side plates 411 on the z axis can be changed, and finally the adjustment of the discharge opening on the space can be realized through the operation, so that the accurate discharge position is matched. Under the clamping adjustment of the track adjusting mechanism 45 and the pressure adjustment of the track pressing shaft 416, the upper track and the lower track can stably support the head of the valve, so that the valve falling process is more stable, and the movement track and the movement speed of the valve falling are easy to control due to the fact that three paths of the 30-degree inclined track, the arc track and the vertical track are spliced. The notch of the distributing disc 421 in the double tracks is just matched with the shape of the valve, the falling valve assembly can be blocked in the initial state, after one feeding beat is finished, the cylinder body 426 drives the piston rod 425 to move, the distributing disc 421 is driven to swing downwards by an angle through the ball head rod assembly 424, a single valve clamped at the notch passes through, the arc surface of the distributing disc 421 simultaneously continues to block the upper valve assembly, and after the action is finished, the cylinder piston drives the distributing disc 421 to recover, and one-time distributing is finished. The discharge claw 433 initially seals the double tracks by the discharge claw disc, a single air valve falling from the distributing mechanism stays on the discharge claw 433, when a discharge signal is transmitted, the cylinder block 436 drives the piston rods 435, 435 to pull the discharge claw 433, the discharge claw 433 rotates around the pin shaft 432 by an angle, the track space is released, and the air valve can pass through. The detecting lever 461 contacts the valve to obtain parameters such as the number of valve passes, time, speed and the like, and feeds back the parameters to the central controller to determine the working beats of each mechanism.

As shown in fig. 24, the blanking assembly 5 includes a receiving hopper 531, a switching baffle 532, a switching shaft 533, a lower blanking channel 534, a blocking door 535, a blocking plate 536, a double slide 537, a proximity switch 538, a slide stop 539, a base 541, and a bottom plate 542.

Base 541 links firmly with the lathe bed, and bottom plate 542 links firmly with base 541, connects hopper 531, down blanking channel 534 and base 541 link firmly, and conversion baffle 532 links firmly through conversion axle 533 and hopper 531 down, and baffle door 535 links firmly with down blanking channel 534, is equipped with proximity switch 538 on the baffle door 535, and baffle 536 and the end of blanking channel 534 constitute the gap export down, and double slide 537 links firmly with blanking channel down, and its end links firmly limited slip piece 539.

After the valve is processed, the valve is ejected to the receiving hopper 531, the conversion baffle 532 can rotate around the conversion shaft 533, the upper end of the conversion baffle 532 props against the base 548 at ordinary times, the rotation is opened, the valve passes through, when the valve reaches the stop gate 535 through the lower blanking channel 534, the proximity switch 538 counts, the valve adjusts the space position through the gap reserved by the stop gate 535 and matches with the follow-up double slide 537, and finally the valve stops along the double slide to reach the stop block 539.

As shown in fig. 25, the spindle assembly 6 includes a support mechanism 61, a control mechanism 62, and a spindle assembly mechanism 63, and as shown in fig. 31 and 32, the support mechanism 61 includes a spindle case 611, a pulley end cover 612, a front end cover 613, a rear end cover 614, an encoder support 615, and a long shaft sleeve 616, and as shown in fig. 25 and 26, the control mechanism 62 includes an encoder 621, an encoder timing pulley 622, an encoder seat 623, an encoder shaft 624, and an encoder timing belt 625, and as shown in fig. 26, the spindle assembly mechanism 63 includes a spindle 631, a spindle pulley 632, a washer 633, a timing belt pulley 634, and a bearing 635.

The spindle box body 611 is connected with the lathe bed base assembly 2 through bolts, the spindle motor conveyor belt 215 on the lathe bed base assembly 2 is matched with the spindle belt pulley 632, the belt pulley end cover 612 is used for positioning and clamping the spindle belt pulley 632, the synchronous belt pulley 634 is positioned through a gasket 633 and a rear end cover 614, the synchronous belt 625 is matched with the synchronous belt pulley 634, the other end of the synchronous belt is matched with the synchronous belt 622 of the encoder, the encoder support 615 fixed on the spindle box body 611 is connected with the encoder 621, the spindle 631 is provided with the long shaft sleeve 616 for positioning each part, the spindle body is connected with the box body 611 through the three-diagonal contact bearing 635, and the front end cover 613 is connected with the clamping and pushing assembly 7 through bolts.

In operation, the belt transmits the power of the spindle motor to the spindle belt pulley 632, the spindle 631 is driven to rotate by the intermediate connecting piece, the motion is the main motion, and meanwhile, the synchronous belt mechanism accurately reflects the rotation speed of the spindle to the encoder 623, so that the encoder 623 can feed back data to the control system, the accurate control of the rotation speed of the spindle is realized, and the spindle transmits the motion to the clamping and pushing assembly 7 through the end covers 613 and 612.

As shown in fig. 28, the clamping and pushing assembly 7 includes a fixed support mechanism 71, a clamping mechanism 72, and a pushing mechanism 73, as shown in fig. 30, the fixed support mechanism 71 includes a rotation stopping frame 711, a rotation stopping plate 712, a connecting sleeve 713, a bearing sleeve 714, a nut 715, an end cover 716, and a taper sleeve seat 717, as shown in fig. 28, 29, and 30, the clamping mechanism 72 includes an outer pull rod 721, an inner pull rod 722, a rotary cylinder 723, a push rod 724, a piston rod 725, a piston 726, a piston flange 727, and a pull rod head 728, and the pushing mechanism 73 includes a collet 731, a support sleeve 733, and an adjusting nut 732, as shown in fig. 27.

The anti-rotation frame 711 is fixedly connected with the lathe bed, one end of the anti-rotation plate 712 is fixedly connected with the anti-rotation frame 711, the other end of the anti-rotation plate 712 is fixedly connected with the rotary cylinder body 723, the end cover 716 is connected with the rotary cylinder body 723 through bolts, the outer pull rod 721 is internally sleeved with the inner pull rod 722, the inner pull rod 722 is connected with the piston 726, the piston 726 is fixedly connected with the piston rod 725, the piston rod 725 is connected with the pull rod head 728 through the piston flange 727, the pull rod head 728 is sleeved with the collet 731, the tail of the pull rod is connected with the main shaft assembly 6 through the connection sleeve 713 and the bearing sleeve 714, the fixed clamping is carried out through the nut 715, and the support sleeve 733 is sleeved between the collet 731 and the taper sleeve seat 717.

During machining, the cartridge 731 clamps a valve workpiece, and after machining, the revolving cylinder 723 is started to drive the piston 726, and the valve is ejected from the cartridge 731 by linear pushing-out movement of the piston rod 725 and the drawbar 728.

As shown in fig. 31 and 32, the pneumatic system assembly 8 includes a solenoid valve block 81, a speed valve 82, a mounting plate 83, a pneumatic connector 84, and a pneumatic pipe 85.

The electromagnetic valve group 81 and the speed regulating valve 82 are fixedly arranged on the mounting plate 83, and the mounting plate 83 is connected with the lathe body.

During operation, the pneumatic system assembly 8 is responsible for controlling parameters such as starting time, moment, speed and the like of pneumatic elements in each assembly.

As shown in fig. 33, the lubrication system assembly 9 includes a lubrication pump 91, a mounting bracket 92, and the other auxiliary lines described above.

The lubrication system assembly 9 lubricates the parts that move relative to each other.

As shown in fig. 22 and 23, the tool holder assembly 10 includes a distal tool holder 100 and a proximal tool holder 200, each of the distal tool holder 100 and the proximal tool holder 200 including a square tool holder 101, a T-nut 102, a set screw 103, a set key 104,

the T-shaped nut 102 and the positioning key 104 realize the positioning and clamping of the square cutter holder 101 on the cutter holder sliding block 321 of the saddle assembly 3, and the set screw 102 can realize the fixed clamping of a cutter.

As shown in fig. 20, the ejector pin assembly 30 includes a lateral screw driven wheel 3001, a lateral screw timing belt 3002, a lateral screw driving wheel 3003, a lateral screw motor 3004, an ejector pin slide rail 3005, an ejector pin mechanism seat 3006, a lateral screw nut 3007, an ejector pin motor 3008, an ejector pin timing belt 3023, an ejector pin driving wheel 3009, an ejector pin driving wheel 3010, an ejector pin 3011, a lateral screw 3012, an ejector pin slide 3013, an ejector pin nut 3014, an ejector pin bush 3015, an ejector pin head 3016, a lateral screw baffle 3017, an ejector pin bush slide 3018, a bearing seat (1) 3019, a bearing seat (2) 3020, a bearing seat (3) 3021, a bearing seat (4) 3022, an ejector pin timing belt 3023,

The ejector pin mechanism seat 3006 is fixed on the base 541, ejector pin sliding guide 3005 is fixed on the ejector pin mechanism seat 3006 through bolts, a horizontal lead screw baffle 3017 is fixed at both ends of the ejector pin sliding guide 3005 respectively, bearing seat 3019 and bearing seat (2) are fixed on the horizontal lead screw baffle 3017 through bolts respectively, a horizontal lead screw driven wheel 3001 is fixed on one end of a horizontal lead screw 3012 shaft through set screws, the other end of the horizontal lead screw 3012 shaft is fixed on a bearing seat (1) 3019, one end of the horizontal lead screw synchronous belt 3002 is sleeved with a horizontal lead screw driven wheel 3001, the other end is sleeved with a horizontal lead screw driving wheel 3003 and is tensioned, the horizontal lead screw driving wheel 3003 is fixed on the shaft end of the horizontal lead screw motor 3014 through set screws, the horizontal lead screw motor 3004 is fixed on the horizontal lead screw baffle 3017, the upper end of the horizontal lead screw nut 3007 is welded with the ejector pins 3013, the bearing seat 3018 is fixed on the horizontal lead screw shaft end of the horizontal lead screw 3013 through bolts, the bearing seat 3021 and the bearing seat 3014 are fixed on the shaft end of the bearing seat 3013 through bolts respectively, and the other end of the horizontal lead screw driving wheel 3004 is fixed on the bearing seat 3014 through bolts respectively, and the end of the horizontal lead screw driving wheel is fixed on the end of the driving wheel 3004 through set screws 3014 through set screws 3016, and the end of the driving wheel is fixed on the end of the horizontal lead screw nut is fixed on the horizontal lead screw 3013 through bolts, and the end is fixed on the end of the driving screw is fixed on the ejector pin by the ejector pin post 3013.

As shown in fig. 21, the spindle head rotating and feeding assembly 40 includes a cylinder slide table 4001, a spindle head clamp groove 4002, a detachable spindle head 4003, an electromagnetic fixing seat 4004, a rotating cylinder 4005, a cylinder slide table 4006,

the cylinder sliding table 4001 is connected with the base through bolts, the cylinder sliding table 4006 is fixed on the cylinder sliding table 4001, the rotary cylinder 4005 is fixed on the cylinder sliding table 4006 through bolts, the electromagnetic fixing seat 4004 is connected with a rotary table of the rotary cylinder 4005 through bolts, the electromagnetic fixing seat 4004 can clamp the detachable spindle head 4003, and four spindle head clamp grooves 4002 are formed in the end part of the detachable spindle head 4003.

Claims

1. The special numerical control lathe for machining the engine valve sealing molded line is characterized by comprising a protective shell assembly (1), a lathe bed base assembly (2), a saddle assembly (3), a material distributing and discharging assembly (4), a blanking assembly (5), a main shaft assembly, a material clamping and pushing assembly, a pneumatic system assembly and a lubricating system assembly,

the lathe bed base assembly (2) comprises a spindle motor output mechanism (21), a Z-axis moving mechanism (22) and an adjustable lathe bed mechanism (23), wherein the spindle motor output mechanism (21) comprises a spindle motor (211), a spindle motor mounting plate (212), a belt pulley gland (213), a belt pulley (214), a conveyor belt (215), an adjusting bracket (216) and a first adjusting rod (217), the Z-axis moving mechanism (22) comprises a screw driving motor (221), a coupler (222), a motor seat (223), an angular contact bearing and oil seal (224), a travel switch (225), a screw guide rail (226), a bearing seat (227), a pressing plate and gland (228) and a screw (229), the adjustable lathe bed mechanism (23) comprises a lathe bed (231), a connecting bracket (232), a sizing block (233) and a second adjusting rod (234); the saddle assembly (3) comprises a protection shell mechanism (31), a saddle moving platform mechanism (32) and a Z-axis moving platform mechanism (33), the protection shell mechanism (31) comprises a scraping plate (311), a baffle plate (312), a connecting shaft piece (313), a protective cover (314), a sliding cover (315), a first collision block bracket (316), a first collision block (317), a cover plate (318) and a first bracket (319), the saddle moving platform mechanism (32) comprises a saddle sliding plate (321), a first sliding block (322), a bearing seat component (323), a lead screw (324), a guide rail (325), a lead screw nut component (326), a motor (327), a first seven-way lubrication system (328) and a coupler (329), the Z-axis moving platform mechanism (33) comprises a second sliding block (331), a second collision block bracket (332), a second collision block (333), a saddle nut (334), a second seven-way lubrication system (335), a saddle (336) and a saddle matching block (337),

The distributing and discharging assembly (4) comprises a conveying track mechanism (41), a distributing mechanism (42), a discharging mechanism (43), a position connection and adjustment mechanism (44), a track adjustment mechanism (45) and a detection mechanism (46), the conveying track mechanism (41) comprises a double-side plate track (411), a double-side plate track (412), an upper inclined double-track (413), an upper arc double-track (414), an upper vertical double-track (415), a track pressing shaft (416), an adjustment strip, a tight fixed handle and a gasket, the distributing mechanism (42) comprises a distributing disc (421), a second bracket (422), a hinge point (423), a self-lubricating ball-head rod bearing assembly (424), a distributing piston rod (425), a distributing cylinder block (426), the discharging mechanism (43) comprises a discharging frame (431), a discharging claw pin (432), a discharging claw (433), a discharging hinge point (434), a discharging piston rod (cylinder block (436), a bracket hinge point (437), a third bracket (438), the position connection and adjustment mechanism (44) comprises an adjustment unit (441), a base (442), a support (443), an adjustment plate (444), an adjustment rod (4411), a double-screw rod (447) and an adjustment unit (4411) An adjusting seat (4412) and an adjusting block (4413); a bracket (443) for mounting the adjustment plate (444) on the base (442); the track adjusting mechanism (45) comprises a tightly fixable handle (451), a clamping nut (452), a plate shaft (453), a spring (454), a movable adjusting plate (455), a fixed adjusting plate (456) and a shaft sleeve (457), the detecting mechanism (46) comprises a detecting rod (461), a detecting rod seat (462), an adjusting nut (463), a sensing piece (464), a proximity switch (465), a detecting seat (466), a total support (467), a valve to be processed (471) and a valve guide groove (472),

The main shaft assembly comprises a supporting mechanism (61), a control mechanism (62) and a main shaft assembly mechanism (63), wherein the supporting mechanism (61) comprises a main shaft box body (611), a belt wheel end cover (612), a front end cover (613), a rear end cover (614), an encoder support (615) and a long shaft sleeve (616), the control mechanism (62) comprises an encoder (621), an encoder synchronous belt wheel (622), an encoder seat (623), an encoder shaft (624) and an encoder synchronous belt (625), the main shaft assembly mechanism (63) comprises a main shaft (631), a main shaft belt wheel (632), a gasket (633), a synchronous belt wheel (634) and a bearing (635), the encoder seat (623) is used for installing the encoder shaft (624), the encoder shaft (624) is coaxially connected with the encoder (621), the encoder synchronous belt wheel (622) is connected with the main shaft assembly mechanism (63) through the encoder synchronous belt (625);

the clamping and pushing assembly comprises a fixed supporting mechanism (71), a clamping mechanism (72) and a pushing mechanism (73); the fixed supporting mechanism (71) comprises a rotation stopping rack (711), a rotation stopping plate (712), a connecting sleeve (713), a bearing sleeve (714), a nut (715), an end cover (716) and a taper sleeve seat (717); the clamping mechanism (72) comprises an outer pull rod (721), an inner pull rod (722), a rotary cylinder (723), an ejector rod (724), a piston rod (725), a piston (726), a piston flange (727) and a pull rod head (728); the pushing mechanism (73) comprises a collet (731), a supporting sleeve (733) and an adjusting nut (732), wherein the ejector rod (724) is connected with a piston at the end part of the piston rod (725), and the adjusting nut (732) is arranged on the collet (731);

The lower part of the lathe bed base assembly (2) is fixedly connected with the ground, the upper part of the lathe bed base assembly is movably supported and connected with the saddle assembly (3), the protective shell assembly (1) takes the lathe bed base assembly (2) as a support and is arranged outside the lathe body, the upper part of the saddle assembly (3) is detachably connected with the tool apron assembly (10), the lower part of the tool apron assembly (10) corresponds to the main shaft assembly and the clamping and pushing assembly (7), the main shaft assembly, the clamping and pushing assembly are detachably connected through a connecting piece, the blanking assembly (5) is arranged at the upper part of the main shaft assembly (6) through a connecting piece, the clamping and pushing assembly which is arranged at the right lower part of the main shaft assembly (6) and matched with the main shaft assembly is arranged in a straight line relative to the main shaft assembly (6), the pneumatic system assembly is arranged at the left side of the lathe body, the lubricating system assembly is arranged at the right side of the lathe body,

the spindle motor output mechanism (21) and the Z-axis moving mechanism (22) are detachably connected and fixed on the adjustable lathe bed mechanism (23), the adjustable lathe bed mechanism is fixed with the ground through four sizing blocks (233), the first adjusting rod (217) is arranged on the adjusting bracket (216), and the adjusting bracket (216) is connected to the adjustable lathe bed mechanism (23); the second adjusting rod (234) is connected with the sizing block (233) and the lathe bed (231), the connecting bracket (232) is connected with the lathe bed (231) through bolts, the spindle motor (211) is detachably connected with the lathe bed (231) through the main motor mounting plate (212), the belt wheel (214) is connected with the motor shaft through a key, the belt wheel gland (213) compresses the belt wheel (214) at the shaft end, one end of the conveying belt (215) is matched with the belt wheel (214), the other end of the conveying belt is matched with the spindle assembly, the screw driving motor (221) is connected with the lathe bed through a motor seat (223) and a lathe bed bolt, the motor shaft is connected with a screw (229) through a shaft coupling (222), two ends of the screw are supported by bearing blocks (227), the bearing blocks (227) are provided with angular contact bearings and oil sealing pieces (224), the screw guide rail (226) is fixed on the lathe bed (231) through bolts, and the middle part of the screw guide rail is provided with a travel switch (225);

The scraper (311) and the baffle (312) are connected with the lathe bed base assembly (2) through connecting shaft pieces (313) through bolts, the protective cover (314) and the sliding cover (315) are connected with the lathe bed base assembly (2) in a sliding mode, the cover plate (318), the protective cover (314) and the sliding cover (315) form a shell part of the protective shell mechanism (31) together, the cover plate (318) is located in the middle of the protective shell mechanism (31), the cutter holder moving platform mechanism (32) is arranged on the protective shell mechanism, and the protective cover (314) is installed on the first support (319); the first collision block (317) is arranged inside the sliding cover (315) and is used for triggering the travel switch to generate a signal; the tool apron sliding plates (321) are fixedly connected to four first sliding blocks (322) and screw nut assemblies (326), the first sliding blocks (322) are slidably connected with guide rails (325), the guide rails (325) are fixed on saddle matching blocks (337) through bolts, a motor (327) is connected with a screw (324) through a coupler (329), and a bearing seat assembly (323) is arranged at the end part of the screw (324) and used for supporting one end of the screw (324) and enabling the screw (324) to rotate; the screw nut component (326) is meshed with the screw (324), four second sliding blocks (331), a saddle nut (334) and a screw guide rail (226) and a screw (229) on the lathe bed base assembly (2) are arranged at the bottom of the saddle, a first seven-way lubrication system (328) and a second seven-way lubrication system (335) are respectively arranged at positions close to the sliding block guide rail, a second collision block (333) is fixedly connected with a second collision block bracket (332), and the second collision block bracket (332) is arranged on the saddle (336);

The material distributing and discharging assembly (4) is connected with the lathe bed through bolts of the base (442), the two adjusting units (441) are fixedly connected with the base (442), and the supporting seat (443) is used for installing the adjusting plate (444) on the base (442); the third adjusting rod (4411) is connected with the adjusting seat (4412) in a telescopic way, the adjusting block (4413) is fixedly connected with the adjusting plate (444), the adjusting plate (444) is provided with a double sliding rod (445), the double sliding rod (445) is connected with the two rod seats (446) in a sliding way, the adjusting screw (447) is connected with the central thread pair of the rod seats (446), the double side plate (411) is fixedly connected with the double rod seats (446), the upper part of the double side plate (411) is closely provided with a double side plate track (412), the upper part of the double side plate track (411) is arranged in parallel with the double side plate track (412) in an inclined way, the upper part of the double track (413), the upper part of the double track (414) and the upper part of the double track (415) are fixedly connected with the cylinder block (457) through the adjusting rod, the fixed handle, the gasket and the double side plate (411), the fixed adjusting plate (455), the fixed adjusting plate (456) is fixedly connected with the side plate, the shaft sleeve (453) is matched with the shaft sleeve (454), the spring (454) is sleeved on the fixed sleeve, the fixed handle (452) is connected with the second bracket (426) and the cylinder block (426) through the bolt block (426) and the cylinder block (457) in a sliding way, the automatic feeding device comprises a feeding piston rod (425), a feeding disc (421), a self-lubricating ball rod bearing assembly (424), a feeding piston rod (435), a cylinder block (436), a bracket hinge point (437) and a third bracket (438), wherein the feeding piston rod (435) is connected with the feeding jaw (433) in a rotatable manner through a feeding hinge point (434), the feeding jaw (433) is connected with a feeding frame (431) in a rotatable manner through a feeding jaw pin shaft (432), a main bracket (467) is connected with a side plate through a bolt, a detection seat (466) is connected with the main bracket (467) through a bolt, a proximity switch (465) is arranged on the detection seat (466), a sensing piece (464), a detection rod (461) is connected with the detection rod seat (462), an adjusting nut (463) is connected with the detection rod seat (462) in an adjustable manner, and a valve guide groove (472) is connected with a double-side plate (411) through a bolt;

The main shaft box body (611) is connected with the lathe bed base assembly (2) through bolts, a main shaft motor conveyor belt (215) on the lathe bed base assembly (2) is matched with a main shaft belt pulley (632), a belt pulley end cover (612) is used for positioning and clamping the main shaft belt pulley (632), a synchronous belt pulley (634) is positioned through a gasket (633) and a rear end cover (614), an encoder synchronous belt (625) is matched on the synchronous belt pulley (634), the other end of the encoder synchronous belt (625) is matched with an encoder synchronous belt pulley (622), an encoder support (615) fixed on the main shaft box body (611) is connected with an encoder (621), a long shaft sleeve (616) is arranged on the main shaft (631) for positioning each part, the shaft body is connected with the main shaft box body (611) through a three-pair angle contact bearing (635), and a front end cover (613) is connected with the clamping and pushing assembly (7) through bolts; the encoder seat (623) is used for installing an encoder shaft (624), wherein the encoder shaft (624) is coaxially connected with the encoder (621), the encoder shaft (624) is connected with the encoder synchronous pulley (622), and the encoder synchronous pulley (622) is connected with the main shaft assembly mechanism (63) through the encoder synchronous belt (625);

the rotary stopping machine frame (711) is fixedly connected with the machine body, one end of the rotary stopping plate (712) is fixedly connected with the rotary stopping machine frame (711), the other end of the rotary stopping plate is fixedly connected with the rotary cylinder (723), the end cover (716) is connected with the taper sleeve seat (717) through bolts, the rotary cylinder (723) is connected with the outer pull rod (721), the inner pull rod (722) is sleeved in the outer pull rod (721), the inner pull rod (722) is connected with the piston (726), the piston (726) is fixedly connected with the piston rod (725), and the ejector rod (724) is connected with the piston at the end part of the piston rod (725); the piston rod (725) is connected with the pull rod head (728) through the piston flange (727), the pull rod head (728) is sleeved with the collet chuck (731), the tail of the pull rod is connected with the main shaft assembly (6) through the connecting sleeve (713) and the bearing sleeve (714), the pull rod is fixedly clamped through the nut (715), and the supporting sleeve (733) is sleeved between the collet chuck (731) and the taper sleeve seat (717); the adjusting nut (732) is arranged on the collet (731);

The protective shell assembly (1) comprises a control panel (11), a front cross beam (12), a left side cover plate (13), a right side cover plate (14), a right cover (15), a rear beam (16), an electric appliance box (17), a motor cover (18), a right side door (19), a right top cover plate (110), a sliding door (111), a sliding door upper rail (112), a rear cover (113), a rear right side plate (114), an upper cover plate (115), a sliding door guide rail (116), a braking resistor cover (117), a rear upper cover plate (118), a rear lower cover plate (119), an electric appliance box door (120), a system box body (121), a motor bracket (122), a hydraulic station bracket (123), a rear cover bracket (124), a signboard (125), a threading groove (126), a drag chain plate (127), a switch (128), an axial flow fan cover (129), three-layer warning lamp (130) and an internal partition plate (131),

the front cross beam (12), the right side door (19), the electric appliance box door (120) and the lathe bed base assembly (2) are fixedly connected, the control panel (11) is installed on the right cover (15), the axial-flow fan cover (129) and the switch (128) are embedded on the electric appliance box (17), the sliding door guide rail (116) is fixedly connected with the front cross beam (12), the sliding door (111) and the sliding door guide rail (116) are in sliding connection, the threading groove (126), the rear cover bracket (124), the hydraulic station bracket (123), the motor bracket (122) and the drag chain plate (127) are welded on the shell, and the rear right side plate (114), the rear lower cover plate (119), the rear upper cover plate (118) and the rear cover (113) are spliced into a rear protection whole;

The blanking assembly (5) comprises a receiving hopper (531), a conversion baffle (532), a conversion shaft (533), a lower blanking channel (534), a blocking door (535), a blocking plate (536), a double slide way (537), a proximity switch (538), a non-slip block (539), a base (541) and a bottom plate (542),

base (541) and lathe bed link firmly, bottom plate (542) and base (541) link firmly, connect hopper (531), down blanking way (534) and base (541) link firmly, conversion baffle (532) link firmly through conversion axle (533) and connect hopper (531), keep off material door (535) and down blanking way (534) link firmly, be equipped with proximity switch (538) on keeping off material door (535), the gap export is formed at baffle (536) and blanking way (534) end down, double slide way (537) link firmly with blanking way down, its end has linked firmly and has ended slider (539).

2. The numerical control lathe special for machining the engine valve sealing line according to claim 1 is characterized by further comprising a tool apron assembly (10), a thimble assembly (30) and a main shaft head rotary feeding assembly (40);

the tool holder assembly (10) comprises a far tool holder (100) and a near tool holder (200), wherein the far tool holder (100) and the near tool holder (200) comprise square tool holders (101), T-shaped nuts (102), set screws (103) and positioning keys (104),

the thimble assembly (30) comprises a horizontal screw driven wheel (3001), a horizontal screw synchronous belt (3002), a horizontal screw driving wheel (3003), a horizontal screw motor (3004), a thimble sliding table guide rail (3005), a thimble mechanism seat (3006), a horizontal screw nut (3007), a thimble screw motor (3008), a thimble screw driving wheel I (3009), a thimble screw driving wheel II (3010), a thimble screw (3011), a horizontal screw (3012), a thimble sliding table (3013), a thimble screw nut (3014), a thimble sleeve (3015), a thimble head (3016), a horizontal screw baffle (3017), a thimble sleeve sliding table (3018), a bearing seat (1) (3019), a bearing seat (2) (3020), a bearing seat (3) (3021), a bearing seat (4) (3022) and a thimble screw synchronous belt (3023),

The main shaft head rotating and feeding assembly (40) comprises an air cylinder sliding table fixing seat (4001), a main shaft head clamp groove (4002), a detachable main shaft head (4003), an electromagnetic fixing seat (4004), a rotating air cylinder (4005) and an air cylinder sliding table (4006),

the T-shaped nut (102) and the positioning key (104) realize the positioning and clamping of the square tool holder (101) on a tool holder sliding plate (321) of the saddle assembly (3), the fastening screw (103) can realize the fixed clamping of a tool, the thimble mechanism seat (3006) is fixed on a base (541) of the blanking assembly (5), the thimble sliding table guide rail (3005) is fixed on the thimble mechanism seat (3006) through bolts, two ends of the thimble sliding table guide rail (3005) are respectively fixed with a transverse screw baffle (3017), the bearing blocks (1) (3019) and the bearing blocks (2) (3020) are respectively fixed on the transverse screw baffle (3017) through bolts, the transverse screw driven wheel (3001) is fixed on one end of a transverse screw (3012) shaft through a fastening screw, the other end of the transverse screw driven wheel (3012) is fixed on the bearing blocks (1) (3019), one end of the transverse screw synchronous belt (3002) is sleeved with the transverse screw driven wheel (3001) through a motor, the other end of the transverse screw driven wheel (3003) is sleeved on the transverse screw (3014) through the transverse screw nut (3014) and the transverse screw (3014) is welded with the transverse screw (3014), the thimble sleeve sliding table (3018) is fixed on the thimble sliding table (3013) through bolts, the bearing seat (3) (3021) and the bearing seat (4) (3022) are respectively fixed on the thimble sliding table (3013), two ends of the thimble screw (3011) are respectively fixed on the bearing seat (3) (3021) and the bearing seat (4) (3022), one end of the thimble screw (3011) is fixed with a thimble screw driving wheel II (3010) through a set screw, two ends of the thimble screw synchronous belt (3023) are respectively sleeved on the thimble screw driving wheel I (3009) and the thimble screw driving wheel II (3010) and are tensioned, the thimble screw driving wheel I (3009) is fixed at the shaft end of the thimble screw motor (3008) through a set screw, the thimble screw motor (3008) is fixed at the bottom of the thimble (3013), the thimble screw nut (3014) is fixed on the thimble screw (3011) through a thread connecting sleeve, the thimble sleeve (3015) is fixed on a platform of the thimble screw nut (3014) through bolt connection, and the end of the thimble sleeve (3015) is fixed with a thimble head (6); cylinder slip table fixing base (4001) and frame bolted connection, cylinder slip table (4006) are fixed on cylinder slip table fixing base (4001), rotate cylinder (4005) and pass through bolted connection and fix on cylinder slip table (4006), electromagnetism fixing base (4004) and the carousel bolted connection who rotates cylinder (4005), and electromagnetism fixing base (4004) can centre gripping removable main shaft head (4003), and the tip of removable main shaft head (4003) has four main shaft head anchor clamps groove (4002).

3. The numerical control lathe special for machining the engine valve sealing line according to claim 1 is characterized in that the pneumatic system assembly comprises an electromagnetic valve group (81), a speed regulating valve (82), a mounting plate (83), a pneumatic connector (84) and a pneumatic pipeline (85), the lubricating system assembly comprises a lubricating pump (91) and a mounting bracket (92), the electromagnetic valve group (81) and the speed regulating valve (82) are fixedly mounted on the mounting plate (83), and the mounting plate (83) is connected with a lathe body; the lubrication system assembly lubricates the relatively moving parts.

4. A numerically controlled lathe special for machining engine valve sealing line according to claim 1, characterized in that the lathe bed (231) is designed to be inclined at 45 degrees, and the spindle motor (211) is installed at the lower part of the lathe bed, and is isolated by a protective component.

5. The numerical control lathe special for machining engine valve sealing lines according to claim 1, wherein four second sliding blocks (331), a saddle nut (334) are arranged at the bottom of the saddle and matched with a lead screw guide rail (226) and a lead screw (229) on a lathe bed base assembly (2), and accurate displacement of the saddle on a Z axis is realized under the signal feedback control of a second collision block (333) and a travel switch (225), and likewise, the motor (327), the lead screw (324), the guide rail (325), the first sliding blocks (322) and the lead screw nut assembly (326) are matched with the control of the first collision block (317) and the travel switch, so that accurate displacement on an X axis of a tool apron sliding plate (321) connected to the motor is realized.

6. The numerical control lathe special for machining engine valve sealing lines according to claim 1 is characterized in that the positions of the adjusting plates (444) on the plane x axis and the plane y axis can be adjusted by adjusting the lengths of the two third adjusting rods (4411), the positions of the double side plates (411) on the z axis can be changed by rotating and adjusting the adjusting screws (447), and three paths of an inclined track, an arc transition track and a vertical track which form 30 degrees with a horizontal plane are sequentially and parallelly arranged on the double side plates (411) along the track of the side plates, and the three paths are spliced into a stable discharging track.

7. The numerical control lathe special for machining engine valve sealing molded lines according to claim 1, wherein a notch of a material distributing disc (421) clamped in a double track is matched with the shape of a valve, a falling valve component group is blocked in an initial state, when one feeding beat is finished, a material distributing cylinder body (426) drives a material distributing piston rod (425) to move, a self-lubricating ball rod bearing assembly (424) drives the material distributing disc (421) to swing downwards by an angle, a single valve clamped at the notch passes through, an arc surface of the material distributing disc (421) simultaneously keeps blocking the upper valve component group, and after the action is finished, a cylinder piston drives the material distributing disc (421) to recover, and one-time material distribution is finished; similar to the material distribution, the material discharge claw (433) seals the double tracks through the material discharge claw disc at the beginning, a single air valve falling from the material distribution mechanism stays on the material discharge claw (433), when a material discharge signal is transmitted, the cylinder body (436) drives the material discharge piston rod (435) to pull the material discharge claw (433), the material discharge claw (433) rotates around the material discharge claw pin shaft (432) for an angle, the track space is released, and the air valve passes through.

8. The numerical control lathe special for machining the engine valve sealing line according to claim 2, wherein the machining method of the numerical control lathe special for machining the engine valve sealing line comprises the following steps of:

1) The valve workpiece falls down through three splicing paths of a 30-degree inclined track, an arc track and a vertical track; the distributing disc (421) is clamped in the double tracks to sort and discharge valve workpieces, the detecting rod (461) contacts the valves to obtain the passing quantity, time and speed of the valves, and the valve passing quantity, time and speed are fed back to the central controller, so that the working beats of each mechanism are determined;

2) The electromagnetic fixing seat (4004) is electrified to work, the main shaft head clamp of the main shaft loosens the detachable main shaft head (4003), the electromagnetic fixing seat (4004) clamps the detachable main shaft head (4003), the rotary cylinder (4005) ventilates to work, the detachable main shaft head (4003) is rotated by 90 degrees to reach a vertical position, the cylinder sliding table (4006) ventilates to work, and the electromagnetic fixing seat (4004) and the rotary cylinder (4005) are pushed forwards, so that the detachable main shaft head (4003) is just under the air valve guide groove (472);

3) The distribution cylinder body (426) is electrified to drive the distribution disc (421) to rotate, a valve (471) to be processed falls into the valve guide groove (472) and enters the detachable spindle head (4003) through the guide of the valve guide groove (472), at the moment, the rotary cylinder (4005) rotates to reversely rotate the detachable spindle head (4003) by 90 degrees to reach a horizontal position, the cylinder sliding table (4006) drives the rotary cylinder (4005) to retreat, a spindle head clamp of a main shaft clamps the detachable spindle head (4003), an electromagnetic fixing seat (4004) stops working, and the detachable spindle head (4003) is loosened;

4) The transverse screw rod motor (3004) works to drive the thimble sliding table (3013) to move so that the thimble head (3016) moves to a position coaxial with the main shaft, and at the moment, the thimble screw rod motor (3008) works to drive the thimble head (3016) to move forwards and prop up a workpiece;

5) During processing, the cartridge clamp head (731) clamps the valve workpiece, and the main shaft (631) precisely outputs the rotating speed and torque under the control of the encoder (621);

6) After the machining is finished, the rotary cylinder (723) is started to drive the piston (726), and the valve is ejected from the cartridge head (731) through the linear pushing-out movement of the pull rod head (728);

7) The air valve is ejected to the receiving hopper (531), the conversion baffle plate (532) is rotated to be opened, when the air valve reaches the material blocking door (535) through the lower blanking channel (534), the proximity switch (538) counts, the air valve adjusts the space position through a gap reserved by the material blocking door (535) and is matched with the follow-up double slide ways (537) to fall, and finally, the air valve reaches the sliding stop block (539) along the double slide ways to stop;

8) The pneumatic system assembly (8) controls the starting time, moment and speed of the pneumatic elements in each assembly;

9) The lubrication system assembly (9) lubricates the parts which move relatively;

10 The T-shaped nut (102) and the positioning key (104) realize the positioning and clamping of the square tool apron (101) on the tool apron sliding plate (321) of the saddle assembly (3).